Yield Override

OVERVIEW

As described in other sections, the Torque Control tightening strategy and the Angle Control tightening strategy are based on reaching a programmed torque or angle target respectively.

The controller has an additional selectable feature in Advanced Setup for these two tightening strategies. This is called Yield Override.

When selecting Torque Control or Angle Control in advanced setup, there is an additional check box for Yield Override. When this option is selected, the tightening strategy works like a normal Torque or Angle strategy except it additionally checks that none of the joint components has yielded before the target torque or angle is reached.

If a yield condition is reached before the target torque or angle is reached, a yield override condition is indicated. If the torque or angle achieved at the yield override condition point lies within the programmed torque or angle limits, the default condition is that the tightening will be accepted. If the user does not want to accept this condition, select Fail on Yield Override, in which case the tightening will be rejected, both torque Hi and Lo lamps will be illuminated and a Yield Override Failure will appear in the Message Box.

In cases where yield is detected before the low limit parameter, Final parameter is below low limit in yield override appears in the Message Box.